1. thing; object; article; stuff; substance
自分でものを持ったり運んだりしていたからだろう。It's probably because they used to carry and move things themselves.
2. one's things; possessions; property; belongings
as 〜のもの, 〜のもん
3. things; something; anything; everything; nothing
4. quality
5. reason; the way of things
6. used to emphasize emotion, judgment, etc.; used to indicate a common occurrence in the past (after a verb in past tense); used to indicate a general tendency; used to indicate something that should happen
formal noun often used as 〜ものだ
やはり慣れないことはするものではないですね。As expected, one really shouldn't do things one isn't used to.
Suffix
Usually written in kana
7. item classified as ...; item related to ...; work in the genre of ...
8. cause of ...; cause for ...